yes, as we all know there are a couple of phases of the convulsion, the first is to spasm the muscles including the ones in the throat which will probably close off the airways trapping gas in the divers lung. If you were to lift the diver at this stage the likelyhood of a burst lung is certain.
I had to wait until the second phase where the diver relaxes before I could take him to the surface. Now this all happens very quickly and the only indication I got of the second phase was to see gas escaping from the divers mouth, I held his head in a sort of neck exstension and waited (a few seconds) had the diver been wearing a FFM I would not have been able to see the gas and tell when it was safe to lift him. Sure he wouldnt drown, he would just die of an embolism. On the surface it was nesacary to give AV a FFM may have hindered the need for very quick acsess to oral/nasal passages. Anyone who thinks that the convusion is over quickly is mistaken, once back on the boat the diver took at least 45mins before beginning to regain consiousnes.

I was scared to hell,missed 35mins of deco but it all turned out ok, I didnt get bent he made a full recovery